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05-10-2017
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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. HLM - non-linear IV and placement of individual characteristics in the model

Hi all! I am working on my dissertation and run across a couple of questions when structuring HLM model. The data looks as follows: I conducted an...

• Replies: 0
• Views: 397
06-22-2017, 05:04 PM
2. How to use Regression to solve this task

Hi, I am new to statistics and in uni we use SPSS to solve statistical problems. I have difficulty to orientate how to solve a problem with...

• Replies: 1
• Views: 587
06-17-2017, 09:50 AM
3. Distribution of fixed effects

Hi all, Let me shortly introduce my research: I am looking at whether companies outperform each other in investments. To do this I observe them at...

• Replies: 3
• Views: 887
06-09-2017, 11:56 AM
4. Multiple rows per respondent

Hey everyone, I have 6 rows of data per respondent and I'd like to perform a linear regression analysis. I'm just not sure about 1 thing. My...

• Replies: 2
• Views: 725
06-09-2017, 05:29 AM
5. Compare regression coefficients of two settings with similar samples

Dear Statisticians, For my thesis I am currently examining whether the accounting principles have an influence on the relation between having a...

• Replies: 0
• Views: 345
06-09-2017, 03:32 AM
6. Comparing effect sizes of two longitudinal linear relationships

Is there a way to determine if one longitudinal linear relationship is significantly stronger than another? I was planning on using regression...

• Replies: 2
• Views: 387
06-08-2017, 10:16 PM
7. Trichotomizing an Independent Variable

In SPSS, how does one go about trichotomizing an independent variable such that about 33% are in each of the three groups?

• Replies: 4
• Views: 618
06-08-2017, 06:19 PM
8. Regression: Multiple Independent Variables by Year

Hello All! First time here and working in SPSS. I'm having a difficult time running a regression using test score proficiency as my dependent...

• Replies: 1
• Views: 762
06-07-2017, 02:33 PM
9. When are residual plots ok?

In general you want a random scatter in the residuals. You want no obvious patterns. I know that is the theory. But what does that really mean in...

• Replies: 2
• Views: 802
06-05-2017, 09:44 PM
10. Regression Analysis

Hey everyone, I have a regression model where I have as a dependent variable daily stock prices over 365 days for multiple stocks. I am...

• Replies: 2
• Views: 671
06-05-2017, 03:35 PM
11. Multiple regression V.S. Bivariate regression

Hi there, I'm interested in the effect of several variables on severity of schizophrenia symptoms. I want to look at the effect of 9 predictor...

• Replies: 3
• Views: 895
06-05-2017, 08:32 AM
12. Master thesis, statistics check!

About me: Medical student with minimal statistical knowledge or research experience Question related to: statistical regression/correlation...

• Replies: 12
• Views: 2,804
06-02-2017, 03:24 AM
13. Analyzing Tagged Content: Is a Multiple Regression Analysis the Right Approach?

I’m working with a relatively small data set that consists of several hundred social media posts, key engagement metrics and up to 10 content “tags”...

• Replies: 1
• Views: 617
06-02-2017, 12:10 AM
14. Repeated measures question

Hello. I have taken day to day repeated measures in number of predictor variables as well as some other ordinal dvs. I want to meaure the effect of...

• Replies: 6
• Views: 3,272
05-31-2017, 04:14 AM
15. Seek non-black box alternative to random forest

I've recently had a research manuscript rejected by an editor. The manuscript showed that for a real life data set, random forest outperformed...

• Replies: 1
• Views: 1,268
05-30-2017, 11:55 AM
16. Regression for river level prediction

I am an avid whitewater kayaker. Many streams have US Geological Survey (USGS) gauges on them. However, some of the best do not. I would like to...

• Replies: 1
• Views: 707
05-30-2017, 09:00 AM
17. Regression

Hi How I can use regression analysis?

• Replies: 2
• Views: 662
05-28-2017, 09:41 PM
18. R square read with or without confounder in the analysis

Hey, My bachelor thesis is about fatigue, nausea and cognitive decline in patients who have head and neck radiation. For example, the dependent...

• Replies: 2
• Views: 876
05-28-2017, 06:38 AM
19. Logistic regression with both positive and negative values for independent variable?

Hi guys, I have a general regression question. Is there an issue with doing a logistic regression with both positive and negative values in the...

• Replies: 2
• Views: 968
05-27-2017, 01:12 PM
20. Deviance residuals in model fitted via MCMC

I fitted a regression model in a Bayesian approach via MCMC. The JAGS code for the model is model{ for(i in 1:n) { y ~ dbeta(alpha, beta) alpha...

• Replies: 0
• Views: 750
05-26-2017, 09:39 PM
21. linear regression practice

I wanted to check over my answers based on these questions Thanks (1) True/False: Clustering is an unsupervised learning problem. (2) ...

• Replies: 2
• Views: 1,501
05-26-2017, 01:20 AM
22. Interpretation of Logistic Regression with Python, Pandas & Statsmodel

Hi guys, I am new to regression analysis and I am trying to figure out how to interpret my results. I basically did a logit regression in Python...

• Replies: 8
• Views: 1,397
05-24-2017, 03:30 PM
23. Bootstrapping pairwise not listwise, a problem with N

Hi! Hoping someone more statistically minded can help. I have a number of variables with different N (they are performance measures and some...

• Replies: 1
• Views: 1,184
05-24-2017, 11:01 AM
24. Clustering

i) T/F:Principal Components Analysis can be used to create a low dimensional projection of the data for use with clustering. For this one above, I...

• Replies: 0
• Views: 905
05-24-2017, 03:25 AM
25. SAS question

Hi all, I was stuck on the following. I explained it below, my approach, and would appreciate any help. Thanks so much. 1) T/F: Common factors...

• Replies: 0
• Views: 722
05-24-2017, 03:20 AM
26. Exponential Smoothing and how it Relates to Changing Seasonality Cycle Intervals

How does exponential smoothing treat seasonality when there are different time intervals to the seasonality. It seems that I have to designate a...

• Replies: 0
• Views: 626
05-23-2017, 04:01 PM
27. Problem with results in ordinal regression...

Hello and thanks in advance for any response... I have 60 likert-type questions (5 items) (and their responses of course...) and age. Age as raw...

• Replies: 3
• Views: 1,128
05-22-2017, 08:44 PM
28. Linear regression / trend question - basic question

Sorry for basic question: I have a series of measurements taken at weekly intervals for a period of 20 weeks. Each measurement is a proportion:...

• Replies: 6
• Views: 1,069
05-19-2017, 09:07 AM
29. Whats is the method to analyze characteristics from two groups?

Hello there, Im new in the statistics world and i hope that you can help me. i have two groups of sample that are divided by one y (depended)...

• Replies: 3
• Views: 864
05-19-2017, 08:25 AM
30. Having trouble with my units in regression analysis.

Hello, I am attempting to regress future currency returns against changes in economic variables (GPD, inflation, index values etc). I am having some...

• Replies: 0
• Views: 649
05-17-2017, 05:07 PM
31. Variation in significance Categorical Regression Analysis (CATREG)

Hello, I am doing Categorical Regression Analysis (CATREG) with SPSS. However, every time i run the analysis, the standard error and p-value vary...

• Replies: 4
• Views: 821
05-16-2017, 11:03 AM
32. Comparing regression coefficients between two groups –> violation of independence?

Hi all, I have a question about the comparison of regression coefficients of two groups (using SPSS) and I think this is the correct sub forum for...

• Replies: 1
• Views: 1,862
05-15-2017, 03:47 PM
33. Condition to put regression analysis zero?

Under what situation intercept can be force to zero in regression analysis?

• Replies: 11
• Views: 1,560
05-14-2017, 10:36 PM
34. ARIMA estimation technique

Hello, I am using SAS to forecast with ARIMA. I need to choose between two methods, conditional least Squares and MLE. Which technique do you...

• Replies: 8
• Views: 2,163
05-13-2017, 01:03 PM
35. When the Outcome and Predictor Variables are (sort of) the same

Hello, everyone, I am working on a study with sensitive information, so it may suffice only to look at the last two paragraphs for my question,...

• Replies: 7
• Views: 1,000
05-12-2017, 07:11 PM
36. Regression Analysis Practice

I'm working through some practice on regression analysis and wanted to confirm. My attempt is below. Thanks (1) The correlation between two...

• Replies: 3
• Views: 1,446
05-10-2017, 12:00 PM
37. Translate multinomial logit regression parameters into binomial

Hello, I have those parameters from a multinomial logit regression that explains Education (L/M/H) by language (Dominant/Other Europe/Non-European)....

• Replies: 0
• Views: 559
05-10-2017, 06:12 AM
38. Regression with summated scale help

Hi all, I am having struggles with computing a (hierarchical) regression analysis for my data, and i have a feeling this is due to my variables. I...

• Replies: 1
• Views: 811
05-07-2017, 07:31 PM
39. Understanding pairwise correlation

Maybe it is the current time, but I have some difficulties understanding what my tutor means (and he is gone on vacation so I can't ask). In my...

• Replies: 6
• Views: 1,225
05-03-2017, 02:44 PM
40. Does endogeneity affect the R-squared estimated in variance partitioning?

Hi, I have a likely very simple question but I can’t get my head around the answer. I want to estimate which part of the variance in a firm's...

• Replies: 1
• Views: 879
05-03-2017, 11:07 AM
41. follow up analysis for regression

I ran 20 services we supply to our customers. I controlled for what seemed obvious things like gender, public support, and severity of disability (we...

• Replies: 8
• Views: 1,284
05-02-2017, 12:04 PM
42. Multiple Regression Help !!

A team of researchers believed that parental expectations (PE), emotionality (E) and fear of negative evaluation (FNE) promoted social anxiety (SA)....

• Replies: 2
• Views: 955
05-01-2017, 02:37 PM
43. Variable change from significant to not significant

I run a multiple regression with 4 main drivers and some control variables. Then I had to run another regression but with six main drivers (of...

• Replies: 8
• Views: 1,853
05-01-2017, 07:55 AM
44. question !!

I am helping my niece in explaining regression analysis by studying by myself and finding problems and trying to solve those. one of the problem has...

• Replies: 4
• Views: 1,121
04-30-2017, 07:58 AM
45. Polynomial regression interpretation

I am running a logistic regression to find how font manipulation (x1) and people perceptions over how easy it is to process the information (x2)...

• Replies: 0
• Views: 707
04-27-2017, 06:42 AM
46. Nested logit?

I am researching about different modes of transportation and i need to get the utility function of each mode. My dependent variable is the modes of...

• Replies: 0
• Views: 1,024
04-26-2017, 11:04 PM
47. AIC computation

(1) Compute the Akaike Information Criterion (AIC) value for the linear regression model Y = b0 + b1*X1 + b2*X2 + b3*X3. The regression model was...

• Replies: 0
• Views: 921
04-26-2017, 06:25 AM
48. How to do a linear multiple regression with multiple correlating independent vars?

Right I am a total newb at stats but I'll try an explain what I'm trying to do. Im trying to find whether China's Foreign Direct Investment...

• Replies: 0
• Views: 503
04-26-2017, 06:10 AM
49. Understanding Mixed Effects Regression Models

Can anyone explain to me the difference between mean effect and change when using a mixed effects regression model? I understand mean effect to be...

• Replies: 0
• Views: 604
04-26-2017, 03:34 AM
50. Data scattered around y=x

Hello everyone, I am a researcher in engineering. I do have some background on statistics and mathematics in general, but I am not a professional...

• Replies: 14
• Views: 1,510
04-25-2017, 08:15 PM
51. Research Proposal - Statistical Analysis?

I am submitting a research proposal, "Does the relationship of exercise and quality of sleep differ with age?" where age is the moderator. It has...

• Replies: 6
• Views: 1,087
04-25-2017, 11:41 AM
52. Regression MC

Can someone confirm the answers to the below? And advise which ones are incorrect. Thanks! 1) True/False: Models selected by automated variable...

• Replies: 7
• Views: 1,454
04-25-2017, 09:27 AM
53. Geographically Weighted Ordinal Logistik Regression

Hello, I'm studying about Geographically Weighted Ordinal Logistik Regression. but I have trouble getting a book or reference that is related to it....

• Replies: 0
• Views: 683
04-24-2017, 09:12 PM

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